光OFDM在接入网中的应用及仿真分析

Optical OFDM in the access network and simulation analysis

正交频分复用(OFDM)频谱利用率高、抗干扰性强、能够有效对抗单模光纤偏振模色散,在高速光通信系统中有很好的应用前景。利用Matlab和Optisystem,对强度调制(IM)/直接检测(DD)的单模光纤系统进行了性能仿真,结果显示在不进行色散补偿和光放大的前提下能够传输40km,满足接入网的要求。

Orthogonal frequency division multiplexing （OFDM） has good prospects in high-speed optical communication system due to its spectrum efficiency, immunity to interference and can be effective against single-mode fiber polarization mode dispersion. An intensity modulation （IM） / direct detection （DD） of the single-mode optical fiber system is simulated by Matlab and Optisystem. The simulation results show that, without dispersion compensation and optical amplification, it can be transmitted 40km and satisfies the access network requirements.